Goggles4U doesn't do sales all that often, and this one is significant (if not a little confusing).
Here is how it's laid out on the website:
Looks to me that, you can buy a $30 coupon for $20 which you have 30 days to use.
If you see something you like at Goggles4U right now -- or have an eye exam scheduled in the next week or two, this is a great way to save up to 33% on your purchase (if my math is correct).
Click here to take advantage today.
Ends Monday, August 23.